/* === Chat Interface Styling === */
:root {
  --bg-color: #0e0e0e;
  --text-color: #eaeaea;
  --accent-user: #64b5f6;
  --accent-bot: #81c784;
  --accent-border: #333;
  --font-family: "Inter", "Segoe UI", Roboto, sans-serif;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-family);
  margin: 2rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  margin-bottom: 1rem;
}

#chat-box {
  border: 1px solid var(--accent-border);
  border-radius: 10px;
  padding: 1rem;
  background: #1a1a1a;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
  height: 65vh;
  overflow-y: auto;
  scroll-behavior: smooth;
}

/* Chat message bubbles */
.msg {
  margin: 0.5rem 0;
  padding: 0.6rem 1rem;
  border-radius: 12px;
  max-width: 75%;
  word-wrap: break-word;
}

.user {
  background: var(--accent-user);
  color: #000;
  align-self: flex-end;
  margin-left: auto;
}

.bot {
  background: var(--accent-bot);
  color: #000;
  align-self: flex-start;
  margin-right: auto;
}

/* Input form */
#chat-form {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#msg {
  flex: 1;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--accent-border);
  background: #121212;
  color: var(--text-color);
  outline: none;
}

#msg:focus {
  border-color: var(--accent-user);
}

button {
  padding: 0.75rem 1.2rem;
  border: none;
  border-radius: 8px;
  background: var(--accent-user);
  color: #000;
  cursor: pointer;
  transition: background 0.2s ease-in-out;
}

button:hover {
  background: #42a5f5;
}

/* Scrollbar styling */
#chat-box::-webkit-scrollbar {
  width: 8px;
}

#chat-box::-webkit-scrollbar-thumb {
  background: #444;
  border-radius: 4px;
}

#chat-box::-webkit-scrollbar-thumb:hover {
  background: #666;
}

/* Mobile-friendly layout */
@media (max-width: 768px) {
  body {
    margin: 1rem;
  }
  #chat-box {
    height: 60vh;
  }
  .msg {
    max-width: 90%;
  }
}